Refrigerator-wall construction.



H. 1. SMITH.

HEFRIGERATOR WALL CONSTRUCTION.

APPLICATION FILED JULY I. 1915.

Patented Apr. 18, 1916.

HUGH J'. SMITH, 0F PHILADELJEHIA, PENNSYLVANIA, ASSIGNOB T0'STOLLSTEIMER' l MANUFACTURING COMP, F PHLIELPHIA,A

l '3210331' 0F DELAWARE.

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the same is to provides construction forthe walls of refrigerators andsimilar apparatus which will more eectively prevent the transmission ofheat from the exterior to the interior thereof.

My invention contemplates the provision of a plurality of layers ofinsulating material separated to form dead airfspaces therebetween and alayer of cellular insulating material arranged on the side toward thevrefrigerating chamber whereby transmission ttt fili

of heat through the wall will be reduced to a minimum.

The nature andcharacteris'tic features of my invention will be morereadily-'understood from the following description taken in connectionwith the accompanying drawing forming part hereof which illustrates acrossv section ofa refrigerator wall construction embodying the mainfeatures of my invention.

Referring to the drawing in theparticular embodiment of my inventiontherein shown, 1 represents the studding 0r framework .of therefrigerator or other .similarstructure, on the outer side of which issecured a layer 2 of insulating material pref-- erably 'composedprincipally .of asbestos bers in compressed sheet or board like form.Upon the other or inner side of the studding l there is also secured asimilar layer 3 of' the same or similar material whereby there isprovided a space 4 which it should be understood is sealed to theexterior and constitutes a dead, air space between the sheets 2 and 3.Upon the inner surface of the sheet 3 there are mounted furring strips 5of any suitable'material upon which is Vsecured a layer of cellularasbestos covering made of one or more 4sheets of corrugated asbestosboard 6 interposed between dat sheets Tof. asbestos board whereby therespecifica-non f Letters raient.

:patenten apr. is, rare.

Application lex July 1,1915. Serial No. 37,570.

is provided 'a multiplicity of an @ens a The f urring upon which thecellular struc'- ture 1s mounted Serves to provide another dead airspace 9 interposed between the cellular structure and the centrallyarranged. sheet 3. 0n the interior of the wall there may be provided alayer of porcelain, zinc or other suitable sanitary 'material 10 for thelining ofthe refrigerator, andlikewise there may be provided on theexterior of the wall a covering sheet 11 of metal, wood or othersuitable material for the purpose of nish.

lt will be seen that there is thus provided a wall construction in whichthe possibility of transmission of heat to the interior of the l. Arefrigerator wall construction c0mV prisin a. plurality of layers ofinsulating material separated by dead air spaces and a layer of cellularinsulating material mounted on the inner side. y

2. A refrigeratorwall construction com pri'sing a plurality of layers ofinsulating material containing asbestos nbers in compressed sheet orboard'like form separated by dead air spaces, and a layer of cellularinsulating material mounted von the inner side and also containingasbestos fibers.

3. A refrigerator wall construction comprisingl a plurality of layers ofinsulating material containing asbestos bers in compressed sheet orboard' like form separated by dead air spaces, and a layer f cellularinsulating material mounted onthe inner side comprising one or moresheets of corrugatedasbestos board interposed between flat' sheets ofasbestos board.

In testimony whereof,v ll have hereunto signed my name.

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